Improvement in heating-drums



UNITED IS'I'A'IEs PATENT OFFICE.

CHARLES W. SERVOSS, OF CHICAGO, ILLINOIS.

I MPROVEMENT IN HEATING-DRUMS.

Specication forming part of Letters Patent No. 117,820, dated August 8, 1871.

To all whom it may concern:

Be it' known that I, CHAELEs W. SEEvoss, of Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Radiators; and I do declare that the following is a true and accurate description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon, and being a part of this specication, in which- Figure l is a section of the radiator-shell with the pipes of the front half partiallyT broken away to show the raised diaphragm, and below it the pipes of the rear half. Fig. 2 is a horizontal section on the line m in Fig. l. Fig. 3 is a vertical section on the line y y in Fig. 2, and Fig.

,4 is a perspective view of one of the scrapers or desired extent to utilize their heat by transmission through and radiation from the external walls and internal tubes; also, in providing the air tubes of each half of the radiator with a scraper for removing soot and ashes adhering thereto, which, being non-conductors, would otherwise impair their efficiency.

In the drawing, A represents the exterior or shell of my radiator, of thin sheet metal,provid ed with top and bottom heads A1 A2, which may be of cast-iron. B is the inlet, entering one side of the shell about midway of its height, disch arging therein the` gases evolved from the ooinbustion of fuel in an adjacent stove or heating-furnace. C is the exit-ilue, leading from the opposite side of the shell near the top or through the top head at that side, if preferred. D is a stationary partition or diaphragm, transversely placed in the shell to intercept the passage of the gases from the inlet to the exit-line, extending from the top head downward about half-way to the bottom. E is a movable diaphragm or valve, having a vertical movement on the face of the other iii proper slides at the sides of the shell, and having attached thereto a rod, d, extending up through the top head, by means of which it may be drawn up so as to afford a direct passage of the gases of combustion from the inlet to the exit-flue, or dropped below the lower edge of the stationary diaphragm so as to revert the draught to any desired extent. The lower corners ofthe diaphragm E are cut away, as shown in Fig. l, so that when it is lowered to the bottom head the draught will not be entirely cut ofi', but fully reverted and divided. F are airtubes, extending through both heads, against which the heated currents impinge in their passage, and thus largely increase the available radiating-surface ofthe device. But, unless some means are provided whereby the rapidly-accumulating coat of soot and ashes, which forms on the exterior of these air-tubes, may be readily and frequently removed, their value is much inipaired from the non-conducting properties of the deposit. To overcome this difficulty and provide a means for the easy and frequent removal of the deposits on the tubes I place in each half of the radiator a scraper of the form shown in Fig. 4, being a semicircular disk of sheet metal, G, perforated as at b, for each air-tube, and provided with a rod, c, which extends up through the top head, as shown in Fig. 3. These scrapers are slipped over the tubes before the upper head is placed on the radiator. Whenever th'e radiator and tubes require to have the deposits removed, the scrapers are drawn up and lowered to the bottom again, which effectually accomplishes the purpose, the soot and ashes may then be readily removed through hand-holes provided in the shell for that purpose.

rlhe radiator should be placed on a proper stand to allow the air to circulate freely under it and pass up the air-tubes; although the device may be placed on top of a furnace if there be sufficient room in the apartment, and the smokepipe be carried up into ity half-way to the top and discharge on the opposite side from the exitfiue.

A weight and cord running over an overhead pulley, or any other convenient means, may be ble diaphragm E With relation to the inlet and einploxed to hold the movable diaphragm at any exit-dues B C, as and for the purpose set forth. desired point, so that the progress of combustion 2. In tubular radiators, the scrapers Gr, ar-

nmy he regula-ted at will. r( nged and operating substantially asdeseribed. l/Vlmt I claim as my invention, and desire to CHARLES W. SERVOSS. secure hy Letters Patent, is Witnesses: v

1. The arrangement, Within the tubular radia- HARRY S. SPRAGUE,

tor A, oi' the stationary diaphragm D and mova- W. S. ROGERS. 

